Improvement in harrow-teeth



H. M. WILLIAMS.

Paiented Oct. 26, I875.

l .iilka N.PETERS, PHOTO-LITNOGRAFHER. WASHINGTUN. D C

UNITED STATES PATENT OFFICE.

HENRY M. WILLIAMS, OF OOLDWATER, MICHIGAN, ASSIGNOR TO HIMSELF AND G. A.LAYTON, OF WAPAKONETTA, OHIO.

IMPROVEMENT IN HARROW-TEEII'H.

V Specification forming part of Letters Patent No. 169,324., datedOctober 26, 1875; application filed June 3, 1875. 1

To all whom it may concern:

Be it known that I, HENRY M. WILLIAMS, of Goldwater, in the county ofBranch and State of Michigan, have invented an Improvement inHarrow-Teeth, of which the following is a specification:

My invention has for its object to lessen the first cost ofbarrow-teeth, and to lessen the cost of their renewal, by providing themwith detachable steel points; and it consists in making the body of thetooth of a section of iron pipe, into the lower end of which is insertedthe screw-threaded shank of rectangular tooth-point, as more fullyhereinafter set forth.

Figure 1 is 'a perspective view of my improved barrow-tooth. Fig. 2 is alongitudinal sectional elevation of the same, but with the partsseparated.

1n the drawing, A represents the shank of the tooth, which is simply apiece of iron tubing cut to the proper length, with a female screw, 0/,cut in the lower end, to receive a male thread, I), chased on the lowerpart of a cylindrical shank, B, of a square steel tooth-point,

B. The shank above the thread bis turned one soon wears out.

What I claim as my invention is- A harrow tooth composed of a tubularthreaded shank, A a, .and the solid point B, having the threaded shank Bb, substantially as described and shown.

HENRY M. WILLIAMS.

Witnesses:

WESLEY GALBIoK, SAMUEL M. WILLIAMS.

